| Specification: |
|
| Material.....................................................BK7 |
| Focal Length
(f)........................................5±% |
| Scratch/Dig............................................80-50 |
| R........Nominal Value to Achieve Focal Length |
| CT.....................................±0.5
mm/±.020 in |
| ET....................................Nominal Value Only |
| Diameter.................+0 - 0.2 mm/+0 - 0.008 in |
| Clear Aperture...................> 90% of Diameter |